Rosa ‘RUIRJ0110A’

ABSTRACT

A new and distinct groundcover  Rosa  plant named ‘RUIRJ0110A’ is disclosed, characterized by abundant magenta, single flowers. Plants are bushy, compact and low growing, suitable for groundcover use. Plants exhibit both good reflowering and abundant production of hips. The new variety is a  Rosa , normally produced as an outdoor garden or container plant.

Latin name of the genus and species: Rosa hybrida.

Variety denomination: ‘RUIRJ0110A’.

BACKGROUND OF THE INVENTION

The new Rosa cultivar is a product of a planned breeding programconducted by the inventor. The cross resulting in this new variety wasmade in April of 2009 at a nursery in Boskoop, The Netherlands.

The seed parent is the unpatented variety Rosa ‘Snow Pavement’. Thepollen parent is the unpatented variety Rosa ‘Andre Brichet’. The newvariety was selected in November 2011 by the inventor at the samenursery in Boskoop, The Netherlands. The inventor continued observingcharacteristics of the new variety for several years, in the controlledconditions of the research nursery.

Asexual reproduction of the new cultivar was performed by vegetativesoftwood cuttings. This was first performed at a greenhouse inAmstelveen, The Netherlands, in March 2012, and has shown that theunique features of this cultivar are stable and reproduced true to typein successive generations.

SUMMARY OF THE INVENTION

The cultivar ‘RUIRJ0110A’ has not been observed under all possibleenvironmental conditions. The phenotype may vary somewhat withvariations in environment such as temperature, day length, and lightintensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined tobe the unique characteristics of ‘RUIRJ0110A’ These characteristics incombination distinguish ‘RUIRJ0110A’ as a new and distinct Rosacultivar:

-   -   1. Groundcover shrub rose.    -   2. Abundant magenta single flowers.    -   3. Abundant hips produced.    -   4. Good reflowering.    -   5. Bushy growth habit.

PARENTAL COMPARISON

Plants of the new cultivar ‘RUIRJ0110A’ are similar to plants of theseed parent in most horticultural characteristics, however, plants ofthe new cultivar ‘RUIRJ0110A’ differ in the following:

-   -   1. Flowers of the new variety are magenta; flowers of the seed        parent are mostly white.    -   2. Plants of the new variety are more compact than plants of the        seed parent.    -   3. Flowers of the new variety produce less petals than flowers        of the seed parent.

Plants of the new cultivar ‘RUIRJ0110A’ are similar to plants of thepollen parent in most horticultural characteristics, however, plants ofthe new cultivar ‘RUIRJ0110A’ differ in the following;

-   -   1. Flowers of the new variety are magenta; flowers of the seed        parent are white with light pink.    -   2. The new variety produces more branches than plants of the        pollen parent.    -   3. Plants of the new variety are more compact than plants of the        pollen parent.    -   4. Flowers of the new variety produce less petals than flowers        of the pollen parent.

COMMERCIAL COMPARISON

Plants of the new cultivar ‘RUIRJ0110A’ can be compared to thecommercial variety Rosa ‘BROKRAHAN’, unpatented. These varieties aresimilar in most horticultural characteristics, however ‘RUIRJ0110A’differs in the following:

-   -   1. This new cultivar reflowers better than this comparator.    -   2. This new cultivar produces more branches per plant than this        comparator.    -   3. Plants of the new variety are more compact than plants of        this comparator.

Plants of the new cultivar ‘RUIRJ0110A’ can be compared to thecommercial variety Rosa ‘BOKRATRACK’, unpatented. These varieties aresimilar in most horticultural characteristics, however ‘RUIRJ0110A’differs in the following:

-   -   1. This new cultivar reflowers better than this comparator.    -   2. This new cultivar produces more hips per plant than this        comparator.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph illustrates a close up view of the flower.The photograph was taken using conventional techniques and althoughcolors may appear different from actual colors due to light reflectanceit is as accurate as possible by conventional photographic techniques.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The RoyalHorticultural Society Colour Chart 2007 except where general terms ofordinary dictionary significance are used. The following observationsand measurements describe ‘RUIRJ0110A’ plants grown outdoors inCamarillo, Calif. The growing temperature ranged from approximately 15°C. to 28° C. during the day and from approximately 8° C. to 15° C.during the night. Measurements were taken in April and May. Generallight conditions were very bright, normal sunlight. Measurements andnumerical values represent averages of typical plant types.

-   Botanical classification: Rosa ‘RUIRJ0110A’.-   Market classification: Groundcover shrub rose.

PROPAGATION

-   Time to initiate roots: 10 days at approximately 25° C.-   Time to produce a rooted cutting: 21 days at approximately 25° C.

PLANT

-   Growth habit: Dense, low growing, groundcover type.-   Age of plant described: 1 year.-   In a container size: 2 gallon.-   Height: 55 cm.-   Plant spread: 50 cm.-   Branching characteristics:-   Length of primary lateral branches: Approximately 15 cm to 22 cm.-   Diameter of lateral branches: Approximately 7 mm to 9 mm.-   Quantity of lateral branches: 10 to 14 within 6 weeks of emerging    from dormancy.-   Branching arrangement: Dense, compound.-   Branches-young wood:    -   -   Diameter.—Approximately 5 mm.        -   Texture.—Lightly pubescent.        -   Approximately density/quantity of thorns.—No thorns on            youngest growth.        -   Color.—Near RHS Green 138C.-   Branches-old wood:    -   -   Diameter.—Approximately 5 mm to 6 mm.        -   Color.—Near RHS Green 138B. Oldest basal branches near            Yellow-Green 147A.        -   Texture.—Densely covered in very small thorns. About 10 to            15 thorns per linear cm.        -   Internode.—4 to 8 cm.-   Thorns:    -   -   Shape.—Deltate.        -   Color.—Near RHS Yellow-Green 1N144B.        -   Length.—2 mm to 3 mm.        -   Diameter.—2 mm at base, 1 mm along 80% of length.

FOLIAGE

-   Leaf:    -   -   Arrangement.—Imparipinnate.        -   Quantity.—Approximately 8 to 15 per main branch.        -   Average length.—Approximately 12 cm to 14 cm.        -   Average width.—Approximately 8.5 cm to 9.5 cm.-   Leaflet:    -   -   Quantity.—Most commonly 9 per leaf. Very rarely 7 on lowest            occurring foliage.        -   Average length.—Approximately 5.5 cm.        -   Average width.—Approximately 2.5 cm.        -   Shape of blade.—Elliptic.        -   Apex.—Acute.        -   Base.—Broad tapered.        -   Margin.—Very finely serrate.        -   Texture of top surface.—Smooth.        -   Texture of bottom surface.—Smooth.        -   Pubescence.—None observed.        -   Leaf internode length.—2 cm to 4 cm.        -   Color.—Young foliage upper side: Near RHS Yellow-Green 144A.            Young foliage under side: Near RHS Green 138A. Mature            foliage upper side: Near RHS Green 137A. Mature foliage            under side: Near RHS Green 137B.        -   Venation.—Type: Pinnate. Venation color upper side: Near            Green 137B. Venation color under side: Near Yellow-Green            145C.-   Stipule:    -   -   Length.—1.5 cm.        -   Width.—4 mm.        -   Color.—Near RHS Green 143A.        -   Texture.—Smooth.-   Petiole:    -   -   Length.—2.0 cm.        -   Width.—2 mm to 3 mm.        -   Color.—Near RHS Yellow-Green 145B.        -   Texture.—Glabrous.-   Rachis:    -   -   Length.—7 cm.        -   Width.—2 mm.        -   Color.—Near RHS Yellow-Green 145B.        -   Texture.—Glabrous.

FLOWER

-   Natural flowering season: April through October in Southern    California.-   Begins flowering after how many years/months: 2 months.-   Inflorescence type: Multiflora.-   Rate of flower opening: Approximately 3 days from bud to fully    opened flower.-   Flower longevity on plant: 5 to 7 days, after fully opened.-   Quantity of flowers: 1 to 3 flowers per flowering axil.-   Inflorescence size:    -   -   Diameter.—Approximately 9 cm.        -   Height.—Approximately 6 cm.-   Flower size:    -   -   Diameter.—Approximately 9 cm.        -   Height.—Approximately 6 cm.-   Peduncle:    -   -   Length.—3 cm.        -   Diameter.—3 mm.        -   Color.—Near RHS Yellow-Green 145B.        -   Texture.—Slightly pubescent.-   Petals:    -   -   Petal arrangement.—Radial, moderately overlapping.        -   Length.—4.0 cm.        -   Width.—4.0 cm.        -   Shape.—Obcordate.        -   Margin.—Entire, slightly undulate.        -   Apex.—Retuse.        -   Base.—Cuneate.        -   Petal quantity.—5 to 6.        -   Texture.—Glabrous all surfaces.        -   Color.—When opening: Upper surface: Near RHS Red-Purple 71A.            Base 71B and White N155B. Lower surface: Near RHS Red-Purple            71B. Base White N155B. Fully opened: Upper surface: Near RHS            Red-Purple 71A. Base 71B and White N155B. Lower surface:            Near RHS Red-Purple 71A. Base 71B and White N155B.-   Bud:    -   -   Shape.—Ovate.        -   Length.—Approximately 3.0 cm.        -   Diameter.—Approximately 1.1 cm.        -   Color.—Near RHS Greyed-Purple 187C.-   Sepals:    -   -   Quantity.—5.        -   Length.—2.5 cm.        -   Width.—5 mm at base.        -   Shape.—Very narrow deltoid.        -   Color.—Interior Surface: Near Green 138C. Exterior Surface:            Near Green 138B.        -   Texture.—Softly pubescent.-   Receptacle:    -   -   Length.—7 mm.        -   Width.—9 mm.        -   Shape.—Spherical        -   Color.—Near Green 138B.-   Fragrance: Very strong, sweet rose scent.

REPRODUCTIVE ORGANS

-   Stamens:    -   -   Quantity.—Average 110 to 130.        -   Filament length.—Average 7 mm.        -   Filament color.—White 155C.-   Anthers:    -   -   Length.—1.5 mm.        -   Shape.—Oblong.        -   Color.—RHS Greyed-Orange 167C.        -   Pollen.—Scant, colored near Greyed-Orange 167C.-   Pistil:    -   -   Number.—Indistinguishable, all individual parts fused into a            single conglomerate structure.        -   Height.—4 mm.        -   Diameter.—5 mm.        -   Color.—Near RHS Yellow-Green 150D.

OTHER CHARACTERISTICS

-   Seeds and fruits: Rose hips produced abundantly.    -   -   Shape.—Slightly flattened sphere.        -   Diameter.—1.8 cm.        -   Height.—1.5 cm.        -   Color.—Near Yellow-Green a144A.        -   Appearance.—Shiny.

What is claimed is:
 1. A new and distinct hybrid cultivar of Rosa plantnamed ‘RUIRJ0110A’ as herein illustrated and described.